3rdparty/imgui/misc/cpp

/******************************************************************************
 * fixup.c
 * 
 * Binary-rewriting of certain IA32 instructions, on notification by Xen.
 * Used to avoid repeated slow emulation of common instructions used by the
 * user-space TLS (Thread-Local Storage) libraries.
 * 
 * **** NOTE ****
 *  Issues with the binary rewriting have caused it to be removed. Instead
 *  we rely on Xen's emulator to boot the kernel, and then print a banner
 *  message recommending that the user disables /lib/tls.
 * 
 * Copyright (c) 2004, K A Fraser
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/delay.h>

#define DP(_f) printk(KERN_ALERT "  " _f "\n")

asmlinkage void do_fixup_4gb_segment(struct pt_regs *regs, long error_code)
{
    static unsigned long printed = 0;
    int i;

    if ( !test_and_set_bit(0, &printed) )
    {
        HYPERVISOR_vm_assist(VMASST_CMD_disable,
                             VMASST_TYPE_4gb_segments_notify);

        DP("");
        DP("***************************************************************");
        DP("***************************************************************");
        DP("** WARNING: Currently emulating unsupported memory accesses  **");
        DP("**          in /lib/tls libraries. The emulation is very     **");
        DP("**          slow, and may not work correctly with all        **");
        DP("**          programs (e.g., some may 'Segmentation fault').  **");
        DP("**          TO ENSURE FULL PERFORMANCE AND CORRECT FUNCTION, **");
        DP("**          YOU MUST EXECUTE THE FOLLOWING AS ROOT:          **");
        DP("**          mv /lib/tls /lib/tls.disabled                    **");
        DP("***************************************************************");
        DP("***************************************************************");
        DP("");

        for ( i = 5; i > 0; i-- )
        {
            printk("Pausing... %d", i);
            mdelay(1000);
            printk("\b\b\b\b\b\b\b\b\b\b\b\b");
        }
        printk("Continuing...\n\n");
    }
}

static int __init fixup_init(void)
{
    HYPERVISOR_vm_assist(VMASST_CMD_enable,
                         VMASST_TYPE_4gb_segments_notify);
    return 0;
}
__initcall(fixup_init);
Mode	Name	Size
-rw-r--r--	imgui_stdlib.cpp	2571	log stats plain
-rw-r--r--	imgui_stdlib.h	1018	log stats plain